This year marks the 55th anniversary of Earth Day! Every year on April 22, people worldwide mobilize to address some of the most urgent threats facing our environment, from climate change to deforestation to plastic pollution. We’re taking a look at what you need to know about this year’s Earth Day events, as well as looking at some fascinating Earth Day facts.
In honor of Earth Day, here are 25 facts about the history of our celebration of Mother Earth, as well as facts about the environment that may serve as a wake-up call for action.
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Fun and Interesting Facts About Earth Day
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1. Gaylord Nelson, a senator from Wisconsin, founded Earth Day in 1970 to raise public consciousness about environmental concerns such as pollution, oil spills and vanishing wildlife. He tapped into the energy of the anti-war movement, framing Earth Day as a “national teach-in on the environment.”
2. April 22 was chosen as the date for Earth Day because it fell between spring break and final exams, and organizers wanted to maximize student involvement.
3. Twenty million Americans, or about 10 percent of the country’s population at the time, took part in events and demonstrations on the first Earth Day.
Related: What Is Arbor Day and Why Do We Celebrate It?
4. The first Earth Day pushed environmental concerns onto the national agenda. That same year, Congress authorized the creation of the U.S. Environmental Protection Agency.
5. The first Earth Day in 1970 inspired the passage of the Clean Air, Clean Water and Endangered Species Acts, according to the EPA.
6. The theme for Earth Day 2025 is “Our Power, Our Planet.”
7. Around one billion people take part in Earth Day activities around the world every year.
8. Last year, millions of people worldwide participated in Earth Hour on March 23. At 8:30 p.m. local time, people participated in events and demonstrated their commitment to the planet. In past years, Earth Hour gatherings have contributed to real policy changes, including the creation of a marine-protected area in Argentina and environmental protection legislation in Russia.
Related: 54 of the Best Ways To Live That ‘No-Single-Use-Plastic Life’
Earth Day Facts for Kids and Adults
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9. On Earth Day in 2011, people planted 28 million trees in Afghanistan as part of a “Plant Trees Not Bombs” campaign.
10. Since the first Earth Day, average annual temperatures in the contiguous United States have been warming at a rate of 0.45°F per decade.
11. Humans today use about 50 percent more natural resources than we did 30 years ago, according to a report from Friends of the Earth.
12. Animal species populations saw an overall decline of 60 percent worldwide between 1970 and 2014 due to habitat loss, pollution, climate change and other factors, according to the WWF.
13. 2024 was the hottest year on record worldwide, followed by 2023 and 2020, respectively.
14. The warmest years on record (worldwide) have occurred in the past 10 years.
15. Scientists estimate that dozens of plants and animal species go extinct each day due to human activity.
16. Rising global temperatures are leading to more extreme weather events, including more intense wildfires and more frequent, high-intensity hurricanes, according to the Earth Day Network.
17. The world’s population is expected to increase from 8 billion today to 9.7 billion in 2050, which will only increase the impact of human activity on the environment, according to the Organisation for Economic Cooperation and Development.
18. Today’s average American generates about 4.9 pounds of trash per day, compared to 2.68 pounds in 1960, according to the EPA.
19. Food accounts for 10 to 30 percent of a household’s carbon footprint, due to the emissions involved in food production and transportation, according to the Center for Sustainable Systems.
Related: 30 Earth Day Memes About Climate Change and Going Green
Important Earth Day Facts
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20. U.S. automobile fuel economy increased 24 percent between 2004 and 2017.
21. You can improve your car’s fuel economy by 7 to 14 percent simply by obeying the speed limit.
22. Electronic devices plugged in on “standby” mode can account for 5 to 10 percent of a household’s energy use.
23. Using a dishwasher is more eco-friendly than hand-washing dishes, according to a recent study from the University of Michigan.
24. Nearly 80 percent of all plastic waste ever created by humans is still in the environment, according to Recycle Now.
25. More than 100 countries and regions have introduced bans on disposable plastic bags to fight plastic waste (as of 2025).
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